<script>
	
	let arr=['北京','上海','广州','深圳']

	// [
	// 	{address:"北京"},
	// 	{address:"上海"},
	// 	{address:"广州"},
	// 	{address:"深圳"}
	// ]


	let newArr=arr.map(item=>{
		return {address:item}
	})

	console.log(newArr)



</script>